Measuring and cutting device



Dec. 30, 1930. F. a. GRONEMEYER 1,736,992

MEASURING AND CUTTING nmvxcs Filed May 4, 1928 I 2 Sheets-Sheet 1 II IIII IHI II I! II II I! II "M" lllllll n In um I lllllllllllllll! Arrowrs.

1930. F. G. GRONEMEYER 1,786,992

MEASURING AND CUTTING DEVICE Filed May 4, 1928 2 Sheets-Sheet 2 F/GJ.

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Patented Dee. 3d,, 123@ am er FRED G. GRONEHIEYER, @115 ST. LQUIS,MISSOURI, ASSIGNOR TO THE BARBER ASPHALT COMPANY, @215 PHILADELPHIA,PENNSYLVANIA, A CORPORATION 01? WEST VIR- GJINM MEASURING AND CUTTINGDEVICE Application filed may 4, 1928. serial Ito. 275,125.

This invention relates to a device adapted to sever measured lengthsfrom a continuous strip of sheet material and to deliver the same to asuitable receivin station, winding machine or the like. T e illustratedembodiment of the invention is particularly designed to handleimpregnated roofing felt and is arranged to cut a continuous sheet ofthis material into uniform lengths which are subse- 1o quently wound bya winding mechanism into rolls which may be conveniently handled.

The primary objects of this invention are the provisions, in a mechanismof the character described, of means for causing a cessation of feedingafter cutting to permit removal of a previously wound length from thewinder, for cutting the continuous sheet during its motion, and forsecurin a uniformity of length of the severed sections.

Other objects and the means for the accomplishment of the objects willbe apparent from the following description considered with reference tothe accompanying drawings, in which:

Fig. 1 is a front elevation of the device.

Fig. 2 is a plan view, partly in section, of the device.

Fig. 3 is a side elevation of the left side of Figs. 1 and 2. so Fig. 4is a similar side elevation of the ri ht side of Figs. 1 and 2.

ig. 5 is a section on line55 of Fig. 2.

Fig. 6 is a section through the epicyclic gear train controlling therotation of the feeding rolls.

In the various figures portions of the supporting frame are omitted forthe sake of clearness, bearings for the shafts being indicatedconventionally.

Power is transmitted to the device through a chain 2 from a suitablesource, for example, motor driven reduction gearing, the chain beingtrained about a sprocket wheel 4 keyed to shaft 6 suitably journalled inthe frame. at A bevel gear 8 is secured to the end of shaft 6 and-mesheswith two bevel gears 10 rotatably mounted on. a stub shaft carried by acasmg 12. A bevel gear 13 carried by a shaft 14 meshes with bevel gears10. shaft 14 being aligned with shaft 6. Casing 12 is journalled onshafts 6 and 14. It will be clear that, if casing 12 is held stationary,shaft 14 will be driven at the same angular yelocity as shaft 6 but inthe opposite direcion.

At the other end of shaft 14 is ke ed a gear 16 by which, through thetrain of gears 1.8, 20 and 22, is driven shaft 24 to which the last gear22 is keyed. The gears in this train may be changed to adjust the lengthof material fed between successive severings.

A gear 26 is carried by shaft 24 and meshes with a gear 28 carried by afeed roll 30 journalled on shaft 14. Gear 28 in turn meshes with a gear32 carried by a cooperating feed roll 34 journalled in verticallyslidable blocks mounted in the frame. Springs 36 engage these blocks tourge the rolls into contact, the tension of the springs being regulatedthrough suitable adjusting means 37.

A. pinion'38 keyed to shaft 6 drives shaft 46 through a train of gears40, 42, 44, whereby a reduction of speed is imparted. A mutilateddriving gear 48 provided with teeth on only half of its circumference iskeyed to shaft 46 and drives a pinion 50 whose teeth are arranged forengagement with the teeth of gear 48. Pinion 50 is of the Geneva typehaving an annular surface engaging the smooth periphery of gear 48whereby its rotation is prevented when the teeth of the gears are not inmesh.

Keyed on the stub shaft which carries pinion 50 is a second mutilateddriving gear 52 meshing with a Geneva pinion 54 keyed to a shaft 56. 'Bythe arrangement described, motion is imparted to shaft 56 during onefourth only of a revolution of shaft 46. On the other hand, the angularvelocity of shaft 56 during its movement is four times that of shaft 46.

Keyed to shaft 56 is a sprocket wheel 58 over which is trained a chain60 engaging a sprocket wheel 62 on casing 12. Gear train 38-44 andsprocket wheels 58 and 62 are so proportioned that casing 12 is rotatedat one half the velocity of and in the same direction as shaft 6 duringthe rotation of shaft 56. As a result, shaft 14 is stationary during onefourth of each revolution of shaft 46. Feed rolls 30 and 34 will,therefore, be stationary during the same period. While it is desirablethat the feed be interrupted entirely for reasons which will appearhereafter, it is obvious that casing 12 may be driven at a rate lessthan or greater than one half the angular velocity of shaft 6 wherebyeither a slow forward movement or even a retracting movement may beimparted to the sheet to provide the desired interval interrupting theforward feed of the sheet.

An elliptical gear 64, keyed to shaft 46 meshes with a similar gear 66keyed to a shaft 68 which carries a fly knife 70 with which coo eratesan anvil roll 72 mounted on a shaft 4 driven from shaft 6 through themedium of a chain engaging sprocket wheels 76 and 78 carried by therespective shafts. The peripheral speed imparted to roll 72 isapproximately the speed of the sheet. The bearing blocks of shaft 74 arevertically adjustable'through hand screws 80 which thus serve to adjustthe anvil roll relatively to the knife. By the elliptical gear driveshown it will be seen that knife 70 is driven at a high rate of speedduring the cutting period and more slowly during the idle part of therevolution. The speed is so arranged as to be approximately that of thematerial during the cutting so that a clean cut is obtained.

When used for severing lengths from a sheet of roofing felt or the like,a winder either of the ordinary mandrel type or of the automatic typemay be placed at the rear of the machine to receive the severed lengthsand wind them in convenient rolls. After knife 70 severs a length fromthe continuous sheet, the interruption to the normal feed occurs due tothe rotation of shaft 56 and casing 12 as above described. This providestime for the completion of the winding of the severed length and itsremoval from the Winder. Upon the completion of the interval the normalfeed is renewed.

It will be observed that a cycle of opera tion is determined by acomplete rotation of shaft 46. If it is desired to vary the length ofthe severed strip, other gears may be substituted in the train 1622. Ifsuch change be made, the linear velocity of the material will be varied.For relatively small changes it is found that no change of angularvelocity of knife 7 0 is necessary since a clean cut'will neverthelessbe formed. If it is desired,

however, to retain very close correspondence between the linearvelocities of the material and knife edge during the cutting, the knifecan be adjusted about shaft 68 as the linear velocity of the material islessened, the drawings showing the blade in the position correspondingto maximum feed. The time of the interval may then be changed byadjustment of the operating parts. This, however, is unnecessary since avery slight angular shift of the knife changes its velocity during thecutting to a very considerable extent, and consequently the time of theinterval will occur at very nearly the same time relative to the cuttingas before the adjustment.

Byreason of the positive drive of all the parts, uniformity of length ofthe severed sections results. It has been found that the lengths ofsheets of nominal lengths of thirtysix feet vary but one-half inch.

The strip which is to be cut is fed between rollers 30 and 34 towardsthe left as viewed in Fig.5, towards the knife 70. The rotation ofrollers 30 and 34 is interrupted by the means described in detail above.

In the operation of the machine, the cutting of the material by theknife occurs just prior to the interruption of the feeding movement, sothat a leading end of the sheet is presented which the operator masecure to the winder. The interruption 0 feed is of such duration thatsufficient time is provided for the removal of a wound roll from thewinder and the proper securing of the leading end of the approachinglength to a new core prior to the renewal of the feeding operation.

Having now fully described my invention, what I claim and desire toprotect by Letters Patent is:

1. A machine for severing sheet material into lengths comprising meansfor feeding said sheet material, means for cutting said material duringthe feeding movement, and means for interrupting the normal feed of saidmaterial, said feeding means including an epicyclic gear train having anormally stationary member, and said interrupting means acting to movesaid stationary member.

2. A machine for severing sheet material into lengths comprising a rollfor feeding said sheet material, a gear rotatable with said roll, adrive shaft, a gear carried by the drive shaft, a rotatable member,means meshing with said gears carried by the rotatable member, means forintermittently rotating said member, and means for cutting said materialduring the feeding movement.

.3. A machine for severing sheet material into lengths comprising meansfor feeding said sheet material, means for cutting said material duringits feeding movement, means for interrupting the normal feed of saidmaterial aftera cutting operation, and means for automatically causingthe feeding means 5 hereunto set my hand, at Madison, Illinois, on

this 20th day of April, 1928.

FRED G. GRONEMEYER.

